After what we the fans have endured the past few years my answer is no until they can prove their worth. Trust is earned and they haven't been here long enough for that however, this trade can go a long way towards earning them some trust.
This should have been done earlier when Rex got fired. Don't give me Whaley would have released the Bills draft strategy because 1. McDermott is the reason behind this and was new so no need to be concerned about what Whaley would say and 2. Many believed Whaley sucked at the draft so would other teams really engage what he had to say reference what the Bills planned to do. Hopefully they hire someone with GM experience but they will hire the assistant GM from Carolina according to the rumors circulating.